But does that mean calculator development dead? These devices can be had for not a lot on the Chinese second-hand electronics market, and after an extensive teardown he comes to the conclusion ...
Image caption, To find the mean age, use a calculator to divide the total age of all the children (168) by how many children there are (15). 168 ÷ 15 = 11.2. The mean age is 11.2 years old.
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